Zhenyu Liao in

Zhenyu Liao

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Mathematics Science at Amazon
📍 Palo Alto, California, United States

Zhenyu Liao is a Mathematics Science professional at Amazon with a PhD from Boston University. His expertise lies in Reinforcement Learning, focusing on applications like RLHF for chatbots and video understanding. His career includes impactful roles at Kwai Inc. and ByteDance, developing machine learning models for large-scale user applications.

Zhenyu possesses a deep passion for pure mathematics, viewing it as an art of imagination and creativity. He maintains a long-standing interest in complex topics like Galois theory, reflecting on how machine learning can now uncover new phenomena in these classic fields, connecting his academic background with his current work.

He delivered multiple mobile models at Kwai that acquired over 10 million users and billions of views within their first week, earning a company R&D Award for Innovation.

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Experience
7 Years
Current Role
Mathematics Science
Location
Palo Alto, California, United States
Personality Overview

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Priorities

Topics Zhenyu cares about

Reinforcement Learning
His current work at Amazon involves RLHF and RL for video understanding. He also posts about the theoretical aspects of RL, such as exploration challenges in PPO.
Pure Mathematics
His PhD is in mathematics, and he expresses a deep appreciation for its creative aspects, referencing his learning of Galois theory nearly 20 years ago.
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Career

Work history

3-2025
Mathematics Science
Amazon
3-2024 - 3-2025
Software Engineer
Meta
12-2021 - 6-2024
Applied Scientist II
Amazon Advertising
12-2019 - 12-2021
Machine Learning Research Scientist
Kwai Inc.
10-2018 - 11-2019
Research Scientist
ByteDance
In the press

Media appearances

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Education
2014 - 2019
Doctor of Philosophy - PhD
Boston University
2009 - 2014
PhD program in mathematics
University at Buffalo
Social presence
in
Behavioral profile

DISC profile (public)

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